Flying saucer and Space shuttle

Flying saucer noun - An (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins.

Space shuttle and flying saucer are semantically related. In some cases you can use "Space shuttle" instead a noun phrase "Flying saucer".

Space shuttle noun - A reusable spacecraft with wings for a controlled descent through the Earth's atmosphere.

Flying saucer and space shuttle are semantically related. You can use "Flying saucer" instead a noun phrase "Space shuttle".